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Variants::Single: do not use invalid VariantIdx for uninhabited enums

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This commit is contained in:
Ralf Jung 2024-12-01 13:12:43 +01:00
parent 37e74596c0
commit 21de42bf8d
47 changed files with 549 additions and 281 deletions
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6
compiler/rustc_smir/src/rustc_smir/convert/abi.rs
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@ -164,9 +164,9 @@ impl<'tcx> Stable<'tcx> for rustc_abi::Variants<rustc_abi::FieldIdx, rustc_abi::
fn stable(&self, tables: &mut Tables<'_>) -> Self::T {
match self {
rustc_abi::Variants::Single { index } => {
VariantsShape::Single { index: index.stable(tables) }
}
rustc_abi::Variants::Single { index } => VariantsShape::Single {
index: index.unwrap_or(rustc_abi::VariantIdx::from_u32(0)).stable(tables),
},
rustc_abi::Variants::Multiple { tag, tag_encoding, tag_field, variants } => {
VariantsShape::Multiple {
tag: tag.stable(tables),